Gas-pressure regulator.



ORVILLE SPRECHER, OF MILWAUKEE, WISCONSIN.

GAS-PRESSURE REGULATQR.

Specification of Letters Patent. Application filed March 3, 1509. 7 Serial No. 481,114.

To all whom it may concern."

Be it known that I, ORVILLE SPRECHER, of

Milwaukee, Wisconsin, have invented a Gas-- Pressure Regulator, of which the following is a specification. v

This invention relates to pressure-regulating devices especially intended for use in pressure-tank systems wherein the gas is stored in a tank under a high degree of compression' and drawn oil" from there to a burner which burns under a comparatively low pressure, so that some reducing or wiredrawing device must be installed in the duct between tank and burner. As is well understood in such cases the pressure in the tank varies and is continually decreasing as the gas is drawn ofl therefrom, while the pressure at the burner must be constant. e

The object of my invention isto provide an automatic pressure-regulating device which will maintain a constant pressure at the burner under varying pressures in the tank, and to provide such a device of a maximum simplicity and a minimum wei ht and cost, the device being especially a aptable to use in automobiles where small size and light weight are very desirable features.

The construction of my invention is best understood from a consideration of the ac companying drawin s wherein I have shown the most improved form of my invention.

In these drawings, Figure 1 is a longitudinal central section through the device;

and Fig. 2 is a plan section thereof taken on the plane 2 of Fig. 1.

r In these drawings every reference letter refers always to the same part. v

The device comprises a body-member a having a central high-pressure gas-chamber b with which communicates a ipe nozzle 01 at one end of'the member a, an a low-pressure gas-chamber d with which communicates a passageway e endin ipe-nozzle f at the other en of said memer. The first said nozzle 0 "is adapted for direct connection wifih the gas tank and the second nozzle may a-ve an annular boss 9 adapted for the attachment of a'flexible rubher-hose k 'thereteJ. Said chambers 12 and 01 are separated by an annular valve-seat i which is'el'osedby a plu j preferably rovided with a washer k 0 4 leather orrub r, which acts to seal the openi-n more perfectly when the is re against the seat. Said plug ts oose y within the chamber d, which latter is closed on top by-a in a second .Thus a regulating-chamber gis formed above the diaphragm Z, to which the highpressure gas is admitted from the chamber 6 by a tubular passageway r in the plug j, the lower end of which opens at the bottom of a tubular extension-z some distance below the valve-seat so as to prevent the pressure in the chamber g from being influenced by the escaping gas.

Against thelower side of the plug 7' acts a colled compressionspring s, which sur- Patented Dec. '7, 1909.

The edge, of the dia-.

rounds and is guided by the extension 2 and I is seated on the end of an adjusting-screw t engaging threads in a boss u on the side of the member a opposite and in axial line with the plug. The head of the screw-t is covered by a screw-cap a, engaging a screwboss w surro'undingit, and sealed by a packing-gasket m. The gas-pressure in the chainber d, being on the low-pressure side, will of course becon stant, but the pressure in the chamber Q is necessarily the same as that in the tank, and it will therefore be variable. The strength of the spring is such that when the gas-pressure in the tank is a maximum it will very nearly close the plug 7' and seal the opening between the two chambers, thus allowing very little gas to pass, but as the pressure diminishes, the pressure on the diaphragm being diminished in proportion, the spring 8 gradually raises the plug and provides an increased opening as desired. The necessary force of the spring to accomplish this effect is regulated by ad j-usting the screw 1., and the upper surfaces as, j, of the membersa andj respectively may be. so formed as not only to support the diaphragm and prevent it from being pulled out or broken in case of a very excessive pressure, but also to take a part of the force off the plug-j in such case. The inner side of the cap nis preferably; provided with a projecting'boss y which may be faced so as to properly'limit the upward 1, movement of the plug.

Various changes andmodifications in the l. A gas pressure-regulator comprising,

in combination with the high and low-pressure chambers separated by a valve-seat, a

reciprocating-plug covering said Valve-seat on the upper side thereof and acting to open the valve in rising, a high-pressure regulating-chamber above said valve-seat, a member connected with said plug and exposed to the downward pressure of said regulatingchamber, and a spring acting to raise said plug from the seat in opposition to the pressure on said member.

2QA gas-pressure regulator comprising, in combination with the high and low-pressure chambers separated by a valve-seat, a reciprocating-plug covering said valve-seat, a high-pressure regulating-chamber above said valve-seat, a spring acting to raise said plug from the seat; said plug being provided with a tubular passageway connecting said high-pressure chamber with said regulating-chamber.

3. A gas-pressure regulator comprising, in combination, a high-pressure chamber, a low-pressure chamber, an apertured partition separating said chambers and having an annular valve-seat surrounding the aperture; a reciprocating valve-plug covering said seat and located in the low-pressure chamber and opening by a movement away from said high-pressure chamber; a flexible diaphragm closing the open side of said low-pressure chamber and secured centrally to said plug, a cap-piece secured over said diaphragm and clamping the edges thereof and leaving a regulating-chamber in said cap-piece above said diaphragm, and means resiliently raising said plug against the pressure upon said diaphragm, there being a passageway connecting said regulating chamber with the source of high-pressure.

4. A gas-pressure regulator comprising, in combination, a high-pressure chamber, a low-pressure chamber, an apertured partition separating said chambers and having an annular valve-seat surrounding the aperture, a reciprocating valve-plug covering said seat and located in the low-pressure chamber and opening by a movement away from said high-pressure chamber; a flexible diaphragm closing the open side of said low-pressure chamber, and secured centrally to said plug, a cap-piece secured over said diaphragm and clamping the edges thereof an leaving a regulating-chamber in said caplece above saiddiaphragm, and means rbslhently raising said plug against the low-pressure chamber, an apertured partition se )arating said chambers and having an annular valve-scat surrounding the aperture; a reciprocating valve-plug covering said seat and located in the low-pressure chamber and opening by a movement away from said high-pressure chamber; a flexible diaphragm closing the open side of said low-l'n'essure chamber and secured centrally to said plug, a cap-piece secured over said diaphragm and clamping the edges thereof, leaving a regulating-chamber in said cappiece above said diaphragm, a coiled compression-spring pressing against the inner face of said plug, an adjustable abutment for the end of said spring opposite said plug, and a passageway connecting said regulating-elmmber with the source of high pressure.

(3. A gas-pressure regulator comprising, in combination, a body-member having a highpressure chamber and a duet connecting therewith, an annular valve-seat at one side thereof, a low-pressure annular chamber surrounding said valve-seat and a ductleading from said low-pressure chamber; a reciprocating-valve plug covering said seat and located in the low-pressure chamber. and opening by a movement away from said high-pressure chamber; a flexible diaphragm closing the open side of said low-pressure chamber and secured centrally to said plug, a cap-piece secured to said body-member over said diaphragm and clamping the edges thereof between it and said body-member and leaving a regulating-chamber in said cap-piece above said diaphragm, a coiled compression-spring pressing against said plug and acting to open it against the pres sure of' said regulating-chamber, and a screw mounted in a threaded boss in said body-member opposite said plug and having an abutment upon which the oppositeend of said spring rests, said screw being rotatable from the outer side of said body-member; there being a passageway connectin said regulating-chamber with the source or highpressure.

7. A gas-pressure regulator comprising, in combination, a body-member having a highpressure chamber and a duct connecting therewith, an annular valve-seat at one side thereof a low-pressure annular chamber surrounding said valve-seat and a duct leading from said low-pressure chamber; a reciproeating-valve plug covering said seat and loing the open side of said low-pressure chamber and secured centrally to said plug, a cappiece secured to said body-member over said iaphragm and clamping the-edges thereofbetween it' and said body-member and leav-i ing a regulating-chamber in said cap-piece above said diaphragm; a coiled compressionspring pressing against said plug and acting to open it a ainst the pressure of said regulating-cham er,ascrew mounted in athread ed boss in said body-member opposite said plug and having an abutment upon which the opposite end of said spring rests, said screw being rotatable from the outerside of said body-member, there being a passageway connecting said regulatmg chamber with the source of high pressure; and a screw-cap engaging a threaded socket in said body-member around the head of said screw and covering the latter.

8. A gas-pressure regulator comprising, in combination, a body-member having a high pressure and alow-pressure chamber therein separated by anannular valve-seat and each having a duct; a flexible diaphragm covering the open side ofsaid low-pressure chamber, a screw-cap engaging threads on said member and clam ing the edges of the diaphragm thereto and providing a closed 80 regulatin -chamber on the upper side of said diap ragm; a valve-plug mounted to reciprocate over saidvalve seat to close the latter and having a screw-threadedboss on its upper end=passing throu ha central hole 85 in said diaphragm anda tu ular boss on its lower end projecting through said seatand gt central tubular passa eway extending from the upper end of sai threaded boss to the lower end of said tubular boss; a nut 40 mounted on said threaded boss and clamping the edges of said diaphragm 'to saidplug; a screw mounted in .a threaded socket 1n said body-member coaxially with and opposite said plug, the head ofsaid screw extending outside said body-member and being adjustable-from withoutg-a-cap-member coveringand sealing the head of said screw; and a coiled compression-spun abuttlng at one end on said screw' and at t e other end on the latter and acting to open said plug, a

9. A gas-pressure regulator comprising, in combination, a body-member having a hlghpressure and alow-pressure chamber therein having a duct; a flexible diaphragm covering the open side of said low-pressure chamber, a screw-cap engaging threads on said chamber and clamping the edges of the dialating-chamber on e upper side of said diaphragm; a valve-plug mounted to reciprocate over said valve-seat to close the latter and having a screw-threaded boss on its upper end assing through a central hole in 65 said diap ragm and a tubular boss on its lower end projecting through said seat and I a central tubular passageway extending from the upper end of said threaded boss to mounted on said threaded boss and clamping screw mounted in a threaded socket in said body-member 'coaxially with and opposite outsi e said body-member and being a justable from without; a cap-member cover mg and sealing the head of said screw; and ahcoiled compression-s ring abuttingat one end onsaid screw an at the other end onv 8o said plug, surrounding said tubular b0ss onthe latter and acting to open said plug, said I cap memb'r having an abutment-surface on its inner ace ada ted to limit the outward In witness whereof I have hereunto set I my hand this first dayg March, 1909. ORVILLE sP cHE-R. 7 "Witnesses: 4 I f J GEORGE W.- COLLEB,

Wmnrnm-mn D. Scrimxrtami on said plug, surrounding said tubular boss separatedby an annular valve-seat and each phragm thereto and providing a closed regu- 60 I the lower end of said tubular boss; a nut v the edges of said diaphragm to said plug; a

said plug, the head of said screw extendin movement of said plug. 

